G-AOVD was a Bristol Britannia 312 operated by BOAC which crashed near Christchurch, Dorset, in the south of England on Christmas Eve 1958, killing two of the five crew and all seven passengers.

The aircraft departed from London Heathrow Airport at 10:10 am on a test flight to renew its certificate of airworthiness with 12 persons aboard including five crew.

Approximately 3 minutes later, at 11:58 am, Hurn Airport lost contact with the aircraft as it struck the ground, crossing a road into a ploughed field, bringing down telephone lines and trees and alerting residents in the nearby villages.

Around midday, the members of the volunteer fire service in Burley and Christchurch were alerted by an air raid siren calling them to the station to respond to the report of the crash.

They began to cut him free and as further emergency services arrived on the scene, a coordinated search and rescue effort was mounted over the site, fanning out and finding a further two survivors.

As a direct result of this and other similar incidents, altimeters would now be required to display a cross-hatch or chequered flag when indicating an altitude below 1500 feet.

As a result of the accident the Ministry of Transport issued a directive to replace all three-pointer altimeters in British registered aircraft which operated at over 20,000 feet before September 1959.